1,720,993 research outputs found
WHAT MODULATES THE ACHIEVEMENT IN AN IN-FERENTIAL, VISUO-SPATIAL ENVIRONMENT
No full textIn inferential environments, people make decisions on the base of outcomes predictions: the more they become ac- quainted, the more the levels of confidence increase. At the moment, the role of psychological traits or superior cognitive functions is still unclear. Through a novel visuo- spatial decision-making task we begin to disentangle the role of these factors: due to the stocastic nature of the task, we assumed that personality traits affect achieve- ments more than intelligence. Forty-two healthy partici- pants performed a visuo-spatial decision-making task de- manding for profit maximization, and responded to Raven- APM, EPQr and STAI tests. No effects of anxiety or personality emerged. Only Raven guided task performance: par- ticipants with higher score maximized their responses more than who showed lower, but still within normality, score. However, this emerged only within a variability threshold. The present experiment formalizes how envi-ronmental variability constrains the role of intelligence in extracting information from a visuo-spatial inferential task
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Full text linkWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
E-Kayak: A wireless system for real time performance analysis in Flatwater Kayaking
No full textPurpose: On-water measurement systems are required to properly evaluate the effectiveness of the paddling technique by professional kayak athletes. These systems have to be able to measure kinematic (speed, acceleration, roll and pitch of the boat) as well as dynamic parameters (stroke frequency, force acting on paddle and foot brace) by using inertial and force sensors properly synchronized.
Methods: We present a wireless multi-node real time data logger customized for flatwater sprint kayaks. The system presents a modular hardware architecture, based on a central unit and wireless sensor nodes, which have been designed to be scaled for use on K1, K2 and K4 boats. It consists of a high frequency (20Hz) GPS, an Inertial Motion Unit (IMU) with nine DOF and two force channels, respectively placed on the paddle and footrest, for each of the athletes belonging the crew. Data from all the channels are synchronously acquired, processed by a microprocessor unit, wirelessly sent via a Wi-Fi link to client terminals (PC, tablet or smartphone) and also stored in a local memory for future offline analyses.
Results: Some results about training sessions of K1 and K2 crews will be presented with the aim of highlighting the features of the system together with its capabilities to obtain specific parameters related to the effectiveness of the paddling technique.
Conclusion: Athletes and coach can visualise the training data on a suited web page. It provides real time feedback on some of the main parameters (time, speed, stroke frequency, force symmetry) and, at the end of the training session. Moreover, these can be downloaded to a PC for further deep analysis
WALKING IN WATER OF ELDERLY: KINEMATIC ANALYSIS USING WEARABLE INERTIAL MAGNETIC SENSORS
No full textSwimmer Hand Trajectory Using Wearable Inertial Magnetic Measurement Units: A Preliminary Study
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